56.3% is the change from 254 to 397
Calculation steps:
[( 397 - 254 ) ÷ 254] x 100 = 56.3%
Formula
Percentage change = [(397 - 254) / 254] x 100
Subtract the new number by the original number
397 - 254 = 143
143 ÷ 254 = 0.562992125984252
0.562992125984252 x 100 = 56.3%